By now, it should be common knowledge that there's no such thing as a "beach body." (Friendly reminder: If you're at the beach, you've got a beach body.) Despite that, the ideal beach body still persists as a media myth—not just by advertisers, but also in your own social media feeds. Ever scroll through your Instagram and stop on a friend's perfectly flexed bikini picture, wondering how she does it? Well now, the process won't be as much of a mystery, because fitness blogger Sara Puhto has broken it down. As it turns out, getting the perfect beach body picture has less to do with having whatever your ideal body shape is and more to do with tricks of the camera.

In a side-by-side comparison, the 20-year-old Instagram influencer shows that the perfect beach body is just an illusion. "Not a transformation photo," Puhto wrote in the caption. "These were taken a few seconds apart while I was at the beach the other day. The photo on the left is what I look like relaxed and not posing—basically how I look 99 percent of the time in a bikini! And the one on the right is how I look in good lighting, flexed, and posing."

The differences are clear. In the photo on the left, Puhto's body is angled towards the camera, making it seem wider and less defined. Meanwhile her seemingly perfect beach body photo has her looking significantly thinner. Plus, her collar bones and abs look like they were almost airbrushed.

Puhto said she was inspired to share the comparison after looking through her own feed and getting caught up in her friends' photos. "I wanted to share this, because I know how it feels to go through Instagram and see photos of people looking amazing on the beach," she wrote. "Which are usually planned and candid—that's why they look so good. So don't get caught up on how they look and compare that to your everyday relaxed body. It is completely normal to not have abs or look lean all the time! Love the body you have in all its forms, especially when you see it in 'bad' lighting, ['bad'] angles, and completely relaxed. You are beautiful and shouldn't have to go through life disliking how you look!"

And this isn't the first time Puhto has shared an eye-opening comparison. Last month, she showed that body image is in the eye of beholder as she posted photos of her in her sweats, posed and relaxed. Just remember: What you see on social media isn't always what you get. With tricks of lighting, crazy angles, and tons of filters, it can be hard to know what's real. Just keep doing you, and celebrate your body as is! Puhto's doing it, and you can too.

See some of Puhto's Instagrams—including her "beach body" side-by-side—below.